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当前位置: 首页 > 文章 > 饲料蛋白水平对多鳞白甲鱼亲鱼生长、体组成与性腺的影响 饲料工业 2016,37 (16) 20-26
Position: Home > Articles > Effects of dietary protein levels on growth, body composition and gonad of Varicorhinus macrolepis broodstock Feed Industry 2016,37 (16) 20-26

饲料蛋白水平对多鳞白甲鱼亲鱼生长、体组成与性腺的影响

作  者：
刘勇;周继术;吉红;于海波;董武子;王涛;刘海侠
单  位：
西北农林科技大学动物科技学院
关键词：
多鳞白甲鱼;亲鱼;蛋白质水平;生长;体组成;性腺
摘  要：
为研究不同蛋白水平对多鳞白甲鱼亲鱼生长、体组成与性腺发育的影响,采用鱼粉、豆粕等常规原料配制蛋白水平分别为30%(CP30)、33%(CP33)、36%(CP36)、39%(CP39)和42%(CP42)的5组等脂饲料。将450尾多鳞白甲鱼三龄亲鱼[(26.53±0.37)g]随机分为5组,每组三个重复,分别饲喂以上5组试验饲料。经过66 d饲喂,测定鱼体生长、生物学性状、体组成并进行鱼体性腺组织学观察。结果表明,不同蛋白水平下多鳞白甲鱼亲鱼生长无显著差异;雌鱼腹腔脂肪指数与性腺指数均随饲料蛋白水平的增加而增加,其中性腺指数在CP39组达最高水平(P<0.05),腹腔脂肪指数在CP36~CP42组即达最高水平,雌鱼其它生物学性状与雄鱼各生物学性状在组间均无显著差异。随饲料蛋白水平的升高,鱼体性腺粗蛋白含量下降,全鱼或肌肉粗蛋白含量不受影响(P>0.05)。随蛋白水平的增加,鱼体腹腔脂肪组织和性腺分别与饲料脂肪酸的相关系数均呈增加趋势。随饲料蛋白水平的增加,雌鱼卵母细胞个体越大,发育成熟度越高,但当蛋白水平过高(39%~42%),雌鱼卵母细胞呈现一定的过熟状态。结果显示,饲料蛋白水平的增加不影响多鳞白甲鱼亲鱼的生长,但对雌鱼性腺发育有影响,多鳞白甲鱼亲鱼的蛋白需求水平以36%~39%为宜。
译  名：
Effects of dietary protein levels on growth, body composition and gonad of Varicorhinus macrolepis broodstock
作  者：
Liu Yong;Zhou Jishu;Ji Hong;Yu Haibo;Dong Wuzi;Wang Tao;Liu Haixia;
关键词：
Varicorhinus macrolepis;;broodstock;;protein level;;growth;;body chemical composition;;gonad
摘  要：
To study the effects of dietary protein levels on growth, body composition and gonad of Vari-corhinus macrolepis broodstock, fish meal, soybean meal and other normal feed resources were used toformulated five diets with different protein levels: 30%(CP30), 33%(CP33), 36%(CP36), 39%(CP39)and 42%(CP42), where the lipid level was the same. Total 450 Varicorhinus macrolepis [(26.53±0.37 g)],being three years old, were randomly divided into 5 groups(triplicate per group) and were feed 5 dietsabove respectively. After 66 days of feeding, growth, biological parameters, body composition and fe-male gonad histological observation of fish were determined. Results showed that growth of Varicorhi-nus macrolepis broodstock was not significantly different among five groups; Intraperitoneal fat indexand the gonad index of the female fish increasedwith the increase of dietary protein levels, wheregonad index reached the highest level in CP39group(P<0.05) and intraperitoneal fat index wasat the highest level in CP36 and CP42 group;other biological parameters of females and all bi-ological parameters of the males were not affect-ed by dietary protein levels. Crude protein of go-nads in fish decreased significantly as dietaryprotein level increased(P<0.05). The correlation coefficient of fatty acid composition between abdomi-nal adipose tissue, the gonads and diets increased with the increase of dietary protein levels. The oo-cytes were increasingly bigger and more maturity with the increase of dietary protein levels, while theyshowed over-maturity as the dietary protein levels were too high(39%~42%). Results showed thatgrowth of Varicorhinus macrolepis was not affected by dietary protein levels, while the gonad develop-ment in females was significantly affected by protein levels, which showed that the appropriate dietaryprotein requirement levels of Varicorhinus macrolepis in brood stock is 36%~39%.

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